This change introduces #### as a separator for general feedback. You need
to add ####General feedback goes here as the last thing inside the {...}.
For example

// question: 123  name: Shortanswer
::Shortanswer::Which is the best animal?{
    =Frog#Good!
    =%50%Cat#What is it with Moodlers and cats?
    =%0%*#Completely wrong
    ####Here is some general feedback!
}

Note that this change is not entirely backwards compatible. It will break
any existing GIFT file where the character sequence #### us used between the
{} as part of the question. This seems highly unlikely.